package chtp01;

public class Main0 {

		public class Replace{
			public  void main(String[] args){
				String sc1 = "asd";
				System.out.println(sc1);
				String sc2 = sc1.replace("a", "A");
				String sc3 = sc1.replace("b", "A");
				System.out.println(sc1);
				System.out.println(sc2);
				System.out.println(sc3);
				
			}
		}
	}
